Anyway, do you have a technical blog? If you have some interesting anecdotes of technical problems that you solved to make the site, they may be good post for HN. Some ideas:

* A long time ago, non-ascii characters used to cause problems. I think it's fixed now in most platforms.

* Have you deployed it in a second cafeteria? There is a lot of custom code that work for N=1 and must be rewriten for N=2.

PS: In the contact part of your site, it says email@gmail.com

PS2: At the bottom, it says "Website built by Unknown" with a link to your github profile.

PS3: Taking a look, this project is in GitHub with a MIT license! https://github.com/IMmercato/paninaro You can submit a link to the repo in github that has a readme in English. The title may be "Paninaro: a cloud-based SaaS platform for restaurants" or something that makes sense. And then make a comment explaining that you are the author, are happy to reply questions and a short backstory about the school cafeteria. I recommend to wait until Monday because if you post your projects everyday, people will complain. (Waiting until Monday is a recommendation that is too careful. There is no hard rule, but for new users is a good idea to wait a few days before reposting.)